<script lang="ts" setup name="HomeCategory">
import useCategoryStore from '@/store/modules/category';
import { computed } from '@vue/reactivity';
import { ref } from 'vue';
const category = useCategoryStore()
const categoryId = ref('')
// 计算属性找到id相等的那一项goods
const goods = computed(()=>{
  return category.list.find(item=>item.id===categoryId.value)?.goods
})
// 快速移入瞬间 
const handelMouseEnter = (id:string)=>{
  if(!id) return
  categoryId.value = id
}
</script>
<template>
  <div class="home-category" @mouseleave="categoryId=''">
    <ul class="menu">
      <li  
      v-for="item in category.list" 
      :key="item.name" 
      @mouseenter="handelMouseEnter(item.id)"
      :class="{active:categoryId===item.id}"
      >
        <RouterLink to="/category/${item.id}">{{item.name}}</RouterLink>
      <template v-if="item.children">
        <RouterLink to="/category/sub/${sub.id}" 
         v-for="sub in item.children?.slice(0, 2)" 
         :key="item.id"
         >{{sub.name}}</RouterLink>
      </template>
      <template v-else>
        <!-- 骨架屏 -->
        <XtxSkeleton 
          :width="60" 
          :height="20"
          style="margin-right: 5px"
          bg="rgba(255,255,255,0.2)"
          animated
          fade
        >
        </XtxSkeleton>
        <skeleton 
          :width="60" 
          :height="20"
          style="margin-right: 5px"
          bg="rgba(255,255,255,0.2)"
          animated
          fade
        >
        </skeleton>
      </template>
      </li>
    </ul>
    <!-- 弹层 -->
  <div class="layer">
    <h4>分类推荐 <small>根据您的购买或浏览记录推荐</small></h4>
    <ul>
      <li
      v-for="item in goods" 
      :key="item.id"           
      >
        <RouterLink to="/">
          <img :src="item.picture" alt="">
          <div class="info">
            <p class="name ellipsis-2">{{item.name}}</p>
            <p class="desc ellipsis">{{item.desc}}</p>
            <p class="price"><i>¥</i>{{item.price}}.00</p>
          </div>
        </RouterLink>
      </li>
    </ul>
  </div>
  </div>
</template>

<style scoped lang="less">
.home-category {
  width: 250px;
  height: 500px;
  background: rgba(0, 0, 0, 0.8);
  position: relative;
  z-index: 99;
  .menu {
    li {
      padding-left: 40px;
      height: 55px;
      line-height: 55px;
      &:hover {
        background: @xtxColor;
      }
      a {
        margin-right: 4px;
        color: #fff;
        &:first-child {
          font-size: 16px;
        }
      }
    }
  }
  .layer {
    width: 990px;
    height: 500px;
    background: rgba(255, 255, 255, 0.8);
    position: absolute;
    left: 250px;
    top: 0;
    display: none;
    padding: 0 15px;
    h4 {
      font-size: 20px;
      font-weight: normal;
      line-height: 80px;
      small {
        font-size: 16px;
        color: #666;
      }
    }
    ul {
      display: flex;
      flex-wrap: wrap;
      li {
        width: 310px;
        height: 120px;
        margin-right: 15px;
        margin-bottom: 15px;
        border: 1px solid #eee;
        border-radius: 4px;
        background: #fff;
        &:nth-child(3n) {
          margin-right: 0;
        }
        a {
          display: flex;
          width: 100%;
          height: 100%;
          align-items: center;
          padding: 10px;
          &:hover,&.active {
            background: #e3f9f4;
          }
          img {
            width: 95px;
            height: 95px;
          }
          .info {
            padding-left: 10px;
            line-height: 24px;
            width: 190px;
            .name {
              font-size: 16px;
              color: #666;
            }
            .desc {
              color: #999;
            }
            .price {
              font-size: 22px;
              color: @priceColor;
              i {
                font-size: 16px;
              }
            }
          }
        }
      }
    }
  }
  &:hover {
    .layer {
      display: block;
    }
  }
}
</style>
